Datasheet > AS1912

AS1912

更新时间： 2024-09-25 04:06:43

品牌	Logo	应用领域
艾迈斯 - AMSCO		微处理器监控
页数	文件大小	规格书
2页	155K
描述
Dual-Voltage Microprocessor Supervisory Circuits with Reset and Watchdog

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AS1912 数据手册

austriamicrosystems

Product Brief

AS1910 - AS1915

Dual-Voltage Microprocessor Supervisory Circuits

with Reset and Watchdog

1 General Description

2 Key Features

ꢀ

Primary VCC Supervisory Range: +1.8 to +3.6V

The AS1910 - AS1915 microprocessor supervisory cir-

cuits were designed to generate a reset when one of the

two monitored supply voltages falls below a factory-

trimmed threshold, and to maintain the reset for a mini-

mum timeout period when both supplies are above their

reset thresholds. Guaranteed to be in the correct state

for VCC higher than +1.0V, these devices are ideal for

multiple-voltage systems with strict monitoring require-

ments.

ꢀ

Secondary VCC Supervisory Range: +0.9 to +2.5V

(AS1913/AS1914/AS1915)

ꢀ

User-Adjustable Threshold Down to +0.63V

(AS1910/AS1911/AS1912)

ꢀ

Guaranteed Reset Valid Down to VCC = +1.0V

Reset Timeout Delay: 215ms

Manual Reset Input

The AS1913/AS1914/AS1915 feature factory-trimmed

thresholds to monitor a primary voltage between 1.8 and

3.6V, and a secondary voltage between 0.9 and 2.5V.

For the AS1910/AS1911/AS1912, a secondary monitor-

ing voltage can be user-adjusted via an external resistor

divider down to 0.6V.

Three Reset Output Types

- Active-High Push/Pull

- Active-Low Push/Pull

- Active-Low Open-Drain

The devices are available with the reset output types

listed in Table 1.

Table 1. Standard Products

ꢀ

Watchdog Timeout Period: 1.5s

Immune to Fast Negative VCC Transients

External Components Not Required

6-pin SOT23 Package

Model

Reset Output Type

Active-Low Push/Pull

Active-High Push/Pull

Active-Low Open-Drain

AS1910/AS1913

AS1911/AS1914

AS1912/AS1915

The AS1910 - AS1915 include a manual-reset input for

systems that never fully power down the microproces-

sor. Additionally, these devices feature a watchdog timer

to help ensure that the processor is operating within

proper code boundaries.

3 Applications

The devices are ideal for portable and battery-powered

systems, embedded controllers, intelligent instruments,

automotive systems, critical CPU monitoring, and any

multi-supply application.

The AS1910 - AS1915 are available in a 6-pin SOT23

package.

Figure 1. Typical Application Diagram

I/O Supply

VCC

Core

Supply

AS1913/

AS1915

CPU

VCC2

RESETN

VCC2

GND

External

Reset

I/O

MRN

WDI

GND

www.austriamicrosystems.com Revision 0.3

1 - 2

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与AS1912相关器件

型号	品牌	获取价格	描述	数据表
AS1912R-T	AMSCO	获取价格	Dual-Voltage Microprocessor Supervisory Circuits with Manual Reset and Watchdog
AS1912S-T	AMSCO	获取价格	Dual-Voltage Microprocessor Supervisory Circuits with Manual Reset and Watchdog
AS1912V-T	AMSCO	获取价格	Dual-Voltage Microprocessor Supervisory Circuits with Manual Reset and Watchdog
AS1912Z-T	AMSCO	获取价格	Dual-Voltage Microprocessor Supervisory Circuits with Manual Reset and Watchdog
AS1913	AMSCO	获取价格	Dual-Voltage Microprocessor Supervisory Circuits with Reset and Watchdog
AS1913SF-T	AMSCO	获取价格	Dual-Voltage Microprocessor Supervisory Circuits with Manual Reset and Watchdog
AS1913TZ-T	AMSCO	获取价格	Dual-Voltage Microprocessor Supervisory Circuits with Manual Reset and Watchdog
AS1913VD-T	AMSCO	获取价格	Dual-Voltage Microprocessor Supervisory Circuits with Manual Reset and Watchdog
AS1914	AMSCO	获取价格	Dual-Voltage Microprocessor Supervisory Circuits with Reset and Watchdog
AS1914SF-T	AMSCO	获取价格	Dual-Voltage Microprocessor Supervisory Circuits with Manual Reset and Watchdog

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